Method for making permanent magnets of Mn-Al-C alloys

Details Method for making permanent magnets of Mn-Al-C alloys Method for making permanent magnets of Mn-Al-C alloys

1983-04-18

1986-11-18

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148120, 148314, H01F 102

Patent

active

046234047

ABSTRACT:
Anisotropic Mn-Al-C alloy magnets exhibiting excellent magnetic characteristics in multipolar magnetization are described. The magnets are obtained by subjecting a polycrystalline Mn-Al-C alloy magnet, which is rendered anisotropic, to compressive working or extrusion at a temperature of from 530.degree. to 830.degree. C. while keeping restrained at least part of the hollow billet along its length so that the at least part is prevented from suffering compressive deformation until fed into a compressive working region. Permanent magnets obtained by the method are also described.

REFERENCES:
patent: 3266954 (1966-08-01), Hokkeling et al.
patent: 3944445 (1976-03-01), Ohtani et al.
patent: 4023991 (1977-05-01), Kubo et al.
patent: 4042429 (1977-08-01), Kojima et al.
patent: 4051706 (1977-10-01), Sakamoto et al.
patent: 4055732 (1977-10-01), Yoshimura et al.
patent: 4133703 (1979-01-01), Kojima et al.
patent: 4404046 (1983-09-01), Sakamoto et al.
Chemical Abstracts, vol. 84, No. 20, 17th May 1976, p. 602, No. 143988y, Columbus, Ohio, USA; & JP-A-76 12319 (Matsushita Electric Industrial Co., Ltd.) 30-01-1976.
IEEE Transactions on Magnetics, vol. MAG-17, No. 6, Nov. 1981, pp. 2651-2653, New York, USA; Z. A. Abdelnour et al.: "Permanent Properties of Mn-Al-C between -50 C and +150 C", p. 2651, right-hand col., last paragraph-p. 2652, left-hand col., paragraph 1.
JEE Journal of Electron Engineering, No. 127, Jul. 1977, pp. 50-54, T. Kubo et al.: "Anisotropic Mn-Al-C Alloy Permanent Magnets can be Machined and Mass Produced" p. 52, left-hand col., last paragraph-p. 53, left-hand column, paragraph 1; FIG. 2.

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